Example 1
Seen in Snapdragon (Antirrhinum majus) and Mirabilis jalapa (four o’clock plant)
A cross between Red flowered varieties (RR) and White flowered varieties (rr) produces a progeny of all pink flowered varieties (Rr) in the F1 generation.
[ Reference: http://iws.collin.edu/biopage/faculty/mcculloch/1406/notes/genetics/incomdom2.htm]
Example 2
Andalusian fowl
A cross between pure forms Black (BB) and White (bb) produces blue coloured individuals (Bb) in the F1 generation.
